const member function
rumbu via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Sat Feb 21 00:27:13 PST 2015
On Saturday, 21 February 2015 at 08:08:25 UTC, Mike Parker wrote:
> On 2/21/2015 4:31 PM, rumbu wrote:
>
> you can do this instead:
>
> this() { cache = SomeExpensiveOp(); }
>
> public @property const(int) SomeProp() const
> {
> return cache;
> }
>
> Notice the const on the end of SomeProp. That makes the
> function callable on a const instance, but you still cannot
> modify cache inside of it.
My question was not how I do this, I know already. My question
was if there is another way to safely call a non-const instance
function on a const object.
Initializing "cache" in the constructor will defeat the cache
mechanism itself an that's I want to avoid.
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